About
As a phono-semantic compound, 嗵 is formed by the mouth radical 口 on the left, indicating it represents a sound, and the component 通 on the right, which provides its exact pronunciation. This onomatopoeic character was created to mimic a resonant, hollow thumping noise, like an object striking a hollow container or a heavy knock on a thick wooden door. Its sole function in written language is to describe such acoustic effects, with no abstract meanings.